Heel-trimming machine



e. 'WQGL IDDEN. HEEL TRIMMING MAGHINE.

(No Model).

Patented Sept. 3, 1889.

N PETERS, Phokrumgrapher, Wnhingicn. D. c.

UNITED STATES PATENT OFFICE.

CHARLES W. GLIDDEN, OF LYNN, ASSIGNOR TO JAMES W. FROOKS, TRUSTEE, OF CAMBRIDGE, MASSACHUSETTS.

HEEL-TRIMMING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 410,358, dated September 3, 1889. Application filed FebruarylB, 1889- Serial No. 300,274. (No model.

To all whom, it may concern/.-

Be it known that I, CHARLES W. GLIDDEN,

of Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Heel- Trimming Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to improve and simplify the construction and operation of that class of heel-trimming machines employing rotary cutters.

The machine herein to be described has a cutter the blades of which are simultaneously adjustable, and the rotary cutter has combined with it a rest for the edge of the heel being trimmed, the said rest being of peculiar construction and being adjustable in a peculiar manner. The machine has connected with it an exhaust-fan, and the trunk leading from the exhaust-fan to the cuttingtool has a cover hinged to the trunk opposite the said tool. The machine herein to be described has two shafts, one for a cutter and 2 5 the other for a grinding-wheel, both thecutter and grinding-wheel having co-operating with them hoods and wind-trunks leading to them in different radial planes from a com mon exhaust-fan.

3 The particular features in which my invention consists will be hereinafter further described, and specified in the claims at the end of this specification.

Figure 1 in elevation represents a heeltrimming machine embodying my invention,

the rotary cutter, together with the treadguard and counter-guard and the edge-rest, being removed. Fig. 2 is a vertical section in the linear: of one of the hangers for one of the rotary shafts. Fig. 3 is a front end View of the counter-guard and its supports and the rotary cutter, the tread-guard and edge-rest removed from Fig. 1. Fig. 4 is a view of Fig. 3, looking at it in the direction of the arrow 2,

the cutter-head being broken out to better show its construction. Fig. 5 is a detailed front elevation of the cutter-head and treadguard. Fig. 6 is a longitudinal cross-section of Fig. 5. Fig. 7 is two views showing the grinding-wheel. Fig. Sis adetail of the yoke to which the carriage is. pivoted, and Fig. 9

is a detail showing one of the cutter-blades detached. i i

The base A of the machine supports a column A, having a top plate A to which is attached by suitable nuts A A the shanks of suitable hangers A forked at their lower ends to support boxes, as A, there being two such boxes for the cutter-shaft a, and also the shaft b. The top plate A has posts A, which support a work-table A, provided, as herein shown, about its edge with a rim. The column A is made hollow, and thebase Alias erected upon it suitable bearing-stands A which support the driving-shaft A, driven by power in 6 5 any usual manner, the said shaft havingfast upon it two belt-pulleysw and I), the pulley a receiving a belt which is passed over a pu1-. ley or. on and so as to rot-ate the cutter-shaft a, while the pulley 1) receives a belt whichis passed over a pulley b on and rotates the shaft 1). The shaft A in practice will have a third pulley, (not shown) which by belt will rotate the shaft B of the exhaust-fan, the case of which is shown. at 13', it having a 75 feet which is bolted upon a stand 13 of the column.

The shaft 0 at its front end will in practice have secured to it a grinding-wheel I), (shown separately in Fig. 7,) covered with sand or emery-paper or cloth to constitute an abrading-surface, the said wheel being used to finish the edges of the heel after the heel has been trimmed.

The wheel If will have arranged in close proximity to and preferably somewhat surrounding it the upper end of a wind-trunk I), having a hinged door or cover I) opposite the end of the shaft 1). The lower end of the said wind-trunk is joined to one side of the case of the exhaust-fan.

The top plate A of the machine has bolted to it a guide-bracket C, (see Figs. 1 and 4,) hava dovetailed or other shaped guide-groove, which receives in it the shank c of a block 0, in 9 5 which slides a U -shaped yoke 4, (shown separately in Fig. 8 enlarged,) the said yoke having a substantially longitudinal slot 5, the said slot receiving in it a pivot-pin 2 (shown by dotted lines in Figs. 3 and 4) of a carriage to which in turn is secured the rand or counter guard a composed, as herein shown, of a hoop or band of metal, as steel, suitably bent and dished, and suitably attached at its ends, by screws or otherwise, to the said carriage,

the rand-guard being opened opposite the end.

of the cutter-shaft and cutter.

The shank of the carriage farthest from the guard o is acted upon by a spring secured to the sliding yoke at, so that the said spring normally acts to keep the rand or counter guard pressed toward the face of the cutter (.1, but yet permits the said counter-guard to be moved angularly with relation to the said cutter to uncover, as has been described in several other pending applications made by me, more or less of the edges of the blades of the cutter when trimmin g about the rear part of. the heel.

I have combined with the yoke t an adj usting-screw a so that the said yoke may be adjusted more or less for a large or small cutter without varying the relative condition of the said spring, so that it acts substantially the same with different-sized cutters.

The shaft (1, is surrounded by a tread-guard of usual construction, and just outside the tread-guard the shaft is squared, as shown at 8, Figs. 1 and G, to receive upon it the head 9, which, like the head 10, is mounted upon a squared part 12 of the said shaft a, and the head is slotted, as at 13, (see Fig. 5,) at three different places to .receive the ends of like pins 14,which are also extended through nearly-radial slots 15 (shown by dotted lines, Fig. 5) in the head (I, the said pins also passing through and fitting round holes in the ears d of the cutter-blades d.

The cutter herein shown forms the subjectmatter of application, Serial No. 283,197.

The construction of the cutter herein shown is such that when the nut 17 is loosened and the screw 18 partially withdrawn the cutterhead may be moved or turned slightly about the shaft a, causing the ends of the pins let to travel longitudinally in the slots 18, the said pins so moved causing the cutter-blades to be moved outwardly simultaneously to compensate for wear in grinding and maintain a standard size for the cutter.

The bearing 19 for the shaft (b11815 clamped and fixed upon it a slotted arm 20, having adjustably secured to it by a set-screw 22 a curved or sector-like arm 23, upon which is adjustably mounted a shoe 26, the arc in which the shoe 26 is adjustable 'being that of a circle described from the center of the cutter-shaft a. The shoe 26 is held in adjustable position by a set-screw 2'7,'and the circular path of the shoe is determined by a circular tongue and groove between the parts and The shoe 26 has connected to it by a set-screw 28' the edge-rest m, upon which in practice will rest the edge of the heel being trimmed.

The drawing Fig. 3 has been marked top side? to show the working position of the parts.

The case of the exhaust-fan has a trunk portion E, in which is loosely fitted or. entered a trunk portion f, the upper portion f of which, as shown, surrounds the shaft a, and is secured to the top plate a by a Screw 24.

The trunk portion f has pivoted to it at a cover portion f having a fastening j, which, when the cutter-head and its co-operating cutters and guidesarein place, is thrown up from its pat.'=,ition, Fig. 1, to inclose the same as in a hood, so that the chips cut from the heel by the rotating cutter are exhausted into and taken away by the exhaustrfan.

I claim 1. In a heel-trimming machine, the block 0, the carriage c and its rand guard composed of a band of thin sheet metal dished and bent around, substantially as shown and described, and attached only at its opposite ends to the said carriage, combined with the supportingyoke, in which the said carriage slides to operate, substantially as described.

2. In a heel-trimming machine, the combi nation, with the heel-trimming cutter, its shaft, and the edge-rest m, of supports for the said. edge-rest, whereby it may be adjusted not only radially toward and from the center of the said shaft, but also in the are of a circle about the said shaft, substantially as described.

3. In a heel-trimming machine, the fixed arm 20, and the radially-adj ustable extension 23, combia'ied .1 i th a shoe 26, made adj ustablc thereon in the arc of a circle described about the center of the said cutter-shaft, and with a rest, as m, for the edge of the heel, substantially as described.

4. In aheel-trimming machine, the block 0',

the independent sliding yoke 4 therein, a carriage movable in the said yoke, and a rand or counter guard attached to the said earriage, combined with the spring 0 carried by the said yoke and acting upon the said carriage to keep it normally pressed toward the said cutter, substantially as described.

5. In a heel-trimming machine, theblock c, the independent sliding yoke 4 therein, a carriage movable in the said yoke, and a rand or counter guard attached to the said carriage, combined with the springc carried by the said yoke and acting upon the said carriage to keep it normally pressed toward the said cutter, and with an adjusting-screw to act upon the said yoke, substantially as described.

6. In a heel-trimming; machine, the combi- In testimony whereofIhave signed my name nation, with the column supporting the trimto this specification in thepresence of two subming mechanism, of a rotary shaft carrying scribing witnesses.

a rotary cutter, bearings for the said shaft, CHARLES GLIDDEN. and a work-table A, arranged horizontaliy Vitncsses:

above and parallel to the shaft carrying the J. A. SAFFORD,

cutter, substantially as described. II. P. FAIRFIELD. 

